Gas range



May 10, 1938. FRIEDMAN '2,ll6,885,

GASRANGE Filed June 29, 1936 uvz/avraa JnB. FRIEDMAN A TTU NEV Patented May 10, 1938 UNITED STATES? PATENT OFFICE 2 Claims.

This invention relates'generally to cooking appliances, and particularly to an improved form of gas range.

The main object of this invention is the provision of an automatic shut-off for gas valves on ranges employing a hinged top.

The second object is to prevent injury to'the top of a gas range of the class described due to the lowering of the cover when a burner is operated.

The third object is to so construct the range that regardless of the number of burners which are turned on, all will be turned oil automatically when the cover is lowered making it necessary to turn each of the burners on manually when the range is used and making it impossible to turn these burners on unless the cover is first raised manually.

I accomplish these and other objects in the manner set forth in the following specification as illustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary perspective view of a gas range showing the top or cover closed.

Fig. 2 is a view similar to Fig. 1, but showing the top or cover open.

Fig. 3 is a fragmentary diagrammatic view showing one form of the device which is usable when the operating valves turn through approximately ninety degrees or less and showing the parts in an operating position, that is with the cover raised.

Fig. 4 is a. fragmentary perspective view of the operating bar in a valve locking position, which wouldbe assumed when the cover was in the position shown in Fig. L

Fig. 5 is a fragmentary view of a valve operating mechanism for use in connection with a valve requiring a movement of more than ninety degrees.

Fig. 6 is a perspective view of a modified formof the device in which a master valve is employed to control the valves.

Similar numbers of reference refer to similar parts throughout the several views.

Referring in detail to the drawing, there is shown a common form of gas range" ,II including burners II and burner control valves l2. Gas is supplied through a main gas pipe 13. A common form of pilot I4 is employed which is connected to the pipe l3 by means of the pilot tube IS. The pilot flame l6 burns within the pilot l4 at all times.

This type of pilot is preferred as it requires flow of gas to theseparate burner no directing since when gas is permitted to flow to any burner II, it is ignited by the central flame l6. Such pilots are now in common use.

The range- III is also provided with a cover I! Whlch is hinged on the pin l8. The cover I! is provided with a forked arm ill to which is connected a link which is attached to the bell crank lever 2| which is rockably mounted on the fixed bracket 22. The bellcrank lever 2| is connected by a rod 23 to a second bell crank lever 24 which is rockably mounted on the fixed bracket 25.

Slidably disposed along the valves I2 is a valve operated bar 26 which is supported by the guides 21 and which is connected to the bell crank lever 24 by means of the pin 28 which is secured to the lever 24 and occupies a slot 29 in the bar 26. The bar 26 is provided with cutout portions 30. The stein 3| of each valve I2 is provided with a. radial pin 32 which extends into its respective cut-out portion 30. The cutout portions are so arranged that the edge 33 of each cut-out portion engages its respective pin 32 and holds the valve l2 in a closed position when the cover I! has moved the bar 25 or valves l2 manually or lowers the cover I1.

manually. If the cover. I1 is lowered, it will, through its operating connections 20 to 28, cause the automatic closing of all St the valves l2.

In the form of the device shown in Fig. 5 in which the valve stem 34 requires more than ninety degrees of movement, there is provided a pinion 35 which meshes with the rack 36 through which slidably passes the valve operating rod 31 which in turn communicates with the bell crank lever 38 which corresponds with the lever 24 shown in Fig. 3. .Suitable guides 39 are provided for the rod 31. e

On the rod 31 at a fixed distance from the end 40 of each rack 36 is secured a collar 4| whose function it is to engage the racks 36 and move the stems 34 in a valve closing direction. Obviously, any other form of rack than the one shown which will accomplish this purp se may be employed without departing from the, spirit 'of this invention.

In the form of the device shown in Fig. 6 is of the master gas valve 46 which is interposed between the maingas pipe 41 of the range In and the pipe l3 which leads to the burner valves l2. The pilot burner pipe l5 should, of course,

be connected to the pipe 41 on the inlet side of the master gas valve 46.

The operation of this form of the device is quite similar to the one just described except that in this case the closing of the cover 42 causes a closing of the master valve 46 and prevents gas from passing through the pipe l3 to the various burners II. It does not however prevent gas from flowing to the pilot flame l6. With this form of the device, the operation ofthe cover 42 not only stops the operation of the burners when the cover is closed, but also causes the resumption of the operation of the burners when the cover is again raised, whereas in the first described form of the device the resumption of the operation of the burners can only be obtained by the manual operation of the valves I2.

While I have thus illustrated and described my invention, it must be understood that the precise details of the parts involved will necessarily be modified to correspond with the particular type of range employed, the type of pilot burner used and the type of control desired. The type of control used depends upon whether or not it shall provide automatic closing and require automatic opening, or whether both the closing and opening movements of the valves will automatically accompany the closing and opening movements of the cover l1. Therefore, it is my intention to cover all such forms of the device as tall fairly within the appended claims.

I claim:

1. In a gas range, a burner and a valve'therefor, a. stem manually rotatable for control of said tion of said stem when said cover is open.

2. A gas range having a plurality of burner valves each operated as recited in claim 1 by the motion of a single cover for all of said burners.

JOSEPH B. FREDMAN. 

